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Multilayers Having Reduced Perpendicular Demagnetizing Field Using Moment Dilution for Spintronic Applications
Multilayers Having Reduced Perpendicular Demagnetizing Field Using Moment Dilution for Spintronic Applications
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机译:自旋电子学应用矩稀释法降低垂直消磁场的多层
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摘要
A magnetic element is disclosed that has a composite free layer with a FM1/moment diluting/FM2 configuration wherein FM1 and FM2 are magnetic layers made of one or more of Co, Fe, Ni, and B and the moment diluting layer is used to reduce the perpendicular demagnetizing field. As a result, lower resistance x area product and higher thermal stability are realized when perpendicular surface anisotropy dominates shape anisotropy to give a magnetization perpendicular to the planes of the FM1, FM2 layers. The moment diluting layer may be a non-magnetic metal like Ta or a CoFe alloy with a doped non-magnetic metal. A perpendicular Hk enhancing layer interfaces with the FM2 layer and may be an oxide to increase the perpendicular anisotropy field in the FM2 layer. A method for forming the magnetic element is also provided.
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